A lot of people are gong to say that this is a terrible anime, that it was too much for their emotions and that they don't recommend this for anyone.
I would like to say that this anime isn't for the light of heart. it definitely has some dark themes and throws you in for a loop.
But I always believed that a good anime or book or movie is one that gets emotions out of people. For people to be reacting the way they are to this show, it must mean that the writers did a great job.
But that's why I like this genre. It's supposed to mess you up emotionally and that's amazing.
I would definitely recommend this if you are interested in dark stuff, but I warn you, it gets dark around halfway through.